Mechanism for manufacturing glassware.



Patented Abr. 9, I90l.

T. COLEMAN, In. MECHANISM FOR MANUFACTURING GLASSWARE.

(Application filed Apr. 3. 1899.) (No Iodel.) 4 Shaets-8heet l.

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No. 67I,757.

MECHANISM FOR MANUFACTURING GLASSWARE.

(Ayplication filed Apr. 8,. 1899.)

(M0 Model.)

4 Sheets-Sheet 2.

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WITNESSES:

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No. 67!,757. Patented Apr. 9, NM.

. T. COLEMAN, In.

MECHANISM FOR MANUFACTURING GLASSWARE.

A lication filed Apr. 3, 1899.]

4 Sheets-Shoet 3.

(No Model.)

Att'y.

. Pncrmumo msm No. 67l,757. PatontedApr. 9, 19m.

T. COLEMAN, In. I MECHANISM FOR MANUFACTURING GLASSWABE.

(Application filed Apr. 8, 1899.)

4 Sheets-Sheet 4.

(80' lodol.)

INVENTOR,

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WITNESSES:

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UNITED STATES PATENT OF ICE.

THOMAS COLEMAN, JR., OF ROCHESTER, PENNSYLVANIA.

MECHANISM FOR MANUFACTURING GLASSWARE.

SPECIFICATION formingpart of Letters Patent No. 671,757, dated Apri19,1901.

Application filed April 3, 1899. Serial No. 711,577. (No model.)

To all whom it may concern.-

Be it known that I, THOMAS COLEMAN, Jr., a citizen of the United States,residing at Rochester, in the county of Beaver and State ofPennsylvania, have invented or discovered certain new and usefulImprovements in Mechanism for Manufacturing Glassware, of whichimprovements the following is a specification.

The invention described herein relates to certain improvements inpresses for the manufacture of glassware, and has for its object aconstruction of mechanism whereby the several operations of cutting theglass, so as to release it from the gathering-rod, pressing the glass inthe mold, and removing the completed article from the mold may beautomatically effected in due succession, the several operations beingcontrolled by the mechanism which effects the severance of the glassfrom the gathering-rod, or may be controlled by the mechanism whicheffects the completion of any one of the several steps involved in themanufacture of the glassware as above recited.

The invention is hereinafter more fully described and claimed. 7

In the accompanying drawings, forming a part of this specification,Figure 1 is a front elevation of my improved press Fig. 2 is a sideelevation of the same. Fig. 3 is a sectional plan view, the plane ofsection being indicated by the line III III, Fig. 2. Fig. 4 is a similarview, the plane of section being indicated by the line IV IV, Fig. 2.Fig. 5 is a view in elevation of a portion of the machine on the sideopposite that shown in Fig. 2. Fig. 6 is a diagrammatic viewillustrating the several circuits and controlling-switches, and Fig. 7is a detail view illustrating table-shifting mechanism.

In the practice of my invention the molds 1, in which the articles areto be shaped, are arranged upon a revoluble table 2, whichis mounted ona suitable bearing on the vertical post or standard 3. The hub 4 of thetable has secured thereto a beveled pinion 5, intermeshing with acorresponding pinion 6, secured on the shaft 7, which is mounted inbearings 8 on the bed-plate 9. A pinion 10 is also secured to the shaft7 and intermeshes with the gear-wheel 12, loosely mounted on a pin orstud 13. A ratchet-wheel 14 is secured to one side of the gear-wheel12and is adapted to be rotated by a spring-pawl 15 on the arm 16, looselymounted on the stud or pin 13. This arm 16 is adapted to be moved backin a direction to cause the pawls to slide freely over the teeth of theratchet-wheel by a spring 17, surrounding the stud or pin 13 and havingone end secured to the ratchet-wheel 14, while its opposite end issecured to a stationary part of the machine. The arm 16 is shifted torotate the gear-wheel 12 and, through the gearing described, the table 2by means of the core 18 of the solenoid 19, which on the completion ofits circuits will move the core 18 in such direction as to efiect thedesired onward movement of the table. The core is withdrawn to permitthe backward swinging of the arm 16 by the spring 20 bearing at one endagainst the solenoid and at the opposite end against a shoulder 21,which is preferably so extended on one side that it will strike againsta stop 22, which is adj ustably secured in a socket 23, so as to limitthe movement of the core 18 as it is shifted by the solenoid. Thelimitation of the movement of the core will effect a correspondinglimitation in the onward movement of the table.

Adjacent to one of the resting-points of the molds a post or standard 24is secured to the bed-plate 9 of the machine and on the upper end ofthis post or standard is secured to the shearing mechanism whereby theglass which is to be deposited in the mold is severed from agathering-rod. This shearing mechanism may be of any suitable form orconstructionas, for example, that shown, consisting of two pivotedblades 25, provided with arms 26, whose ends are connected by links 27to a rod or bar 28. This rod or bar may form, as shown in Fig. 3, thecore of a solenoid 29, by which the shear mechanism can be operated. Thereturn movement of the rod 28, whereby the shears are opened, isefiected by a spring 30, interposed between one end of the solenoid anda shoulder on the rod. As clearly shown in Fig. 1, the shear mechanismis so supported that the blades thereof will pass in their opening andclosing movement immediately above the molds.

A bracket 31 is adjustably secured on the.

post or standard 3 and is adapted to support an electrically-controlledplunger-operating mechanism. This plunger-operating mechanism preferablyconsists of solenoids constructed and operating as described and shownin Letters Patent to myself and W. H. Ehmsen, No. 618,560, dated January31, 1899. As set forth in said patent, the lower solenoid 32 is employedfor the purpose of forcing down the plunger to shape the glass in themold, while the solenoid 33 is employed for raising the plunger from themold; but, as will be readily understood by those skilled in the art,the same solenoid can be employed for raising and lowering the plungerby a reversal of the current through it. As shown in Figs. 1, 2, and 3,the shapingplunger 34 is secured to the lower end of therod 35, attachedto the cores of the solenoids, and a cross-arm 36 is also connected tosaid rod. Rods 37 are adjustably secured to the cross-head 36, and theirlower ends pass freely down through the presser-plate 38. These rods areprovided with heads on their lower ends, so that when the plunger israised the presserplate will be lifted from the moldring, so as topermit the removal of the article from the mold; but during the downwardmovement of the plunger the rods 37 will, after the plate rests upon themold-ring, pass freely through the plate. The presser' plate 38 is helddown to secure the mold-ring in position during the pressing operationby means. of the electromagnets 39, provided with adjustable cores 40,which extend up a suitable height, so that they will have an attractiveeffect upon the presser-plate.

As shown in the drawings, the bottom of each mold is formed by a movablesection, which is provided with a down wardly-extending stem 41, so thatby the operation of a lifting device on the lower end of the stem thearticle may be lifted sufficiently far from the mold as to permit itsremoval therefrom. This bottom section of the mold can be operated byany suitable mechanism; but it is preferred to employ a solenoid 42,preferably located opposite the shear mechanism. As the mold, with acompleted article, comes above the core 43 of the solenoid 42 thecircuit through the latter is completed, as will be hereinafterdescribed, thereby raising the core 43 and forcing up the stem 41 withthe bottom section of the mold.

As shown in Fig. 6, the pressing-solenoid 32 is included in the circuitconsisting of the wires 45, rheostat 46, wire 47, electromagnets 39,switch 48, wire 49, solenoid 32, wire 50, switch 51, wire 52, togenerator. The switch 48 is adapted to be closed by means of projectionsa on the table 2, so located with reference to the positions of themolds that when one of the latter comes into line with the pressingmechanism the projection a will ism and 33 for raising the plunger arepreferably included in the same circuit, consisting of wire 45,contact-point 53, treadle 54,

steps during the latter part of its movement or after its movement iscompleted and during the return movement of the mechanism. For example,I have shown the switch as operated to close the circuit through thesolenoid 19 by means of an arm on the rod 35, which will close theswitch after the plunger has been raised from the mold. The circuitthrough the solenoid 42 to raise the completed article from the moldconsists of the wire 45, solenoid 42, switch 61, wires 62 and 52, togenerator. The switch 61 is so located as to be closed by one of theshoulders a in the rotation of the table 2.

As is well known in the art of pressing glass, the greatest pressuremust be exerted during the preliminary or pressing operation, and assoon as the glass begins to flow to the desired shape the pressureshould be reduced, so as to prevent injury to the glass, and should becut off or entirely stopped as soon as the mold is full. In order toeffect this reduction and entire stoppage of the pressure, the circuitthrough the pressingplunger 32 passes through a rheostat 46. Thecontact-arm 63 of the rheostat is connected to a pinion 64, whichintermeshes with a rack 65, secured to the core of the solenoid 66. Thissolenoid is included in a circuit'consisting of the wire 45, solenoid66, wire 67, switch 68, wires 69 and 52, to generator. The switch 68 isso located as to be closed by an arm 70 on the rod 35 after the plungerwhich is carried by said rod has completed its initial movement or theinitial pressing of the glass. By the closing of this circuit the switchof the rheostat will be shifted so as to introduce one or moreresistances into the circuit of the solenoid 32, thereby reducing theeffective power of the latter on the plunger. The arm 71, supporting theswitch 68, is adjustably mounted in a bracket 71*, secured to thestandard 3, as shown in Fig. 1, so that the time of closing of thecircuit through the rheostat may be regulated in accordance with therequirements of the operation of pressing.

The several parts of the machine are shown in the position they willoccupy on the completion of the pressing of an article in one mold andthe raising of a completed article from a preceding mold. While anarticle is being pressed, an attendant places a mass of glass on the endof the gathering-rod into the mold under the shears, and as soon as thepressing is completed the treadle 54 is depressed, thereby opening thenormallyclosed switch 51 in the circuit of the pressingsolenoid 32 andclosing the circuit through the shear-operating and plunger-lifting s0-lenoids 29 and 33. By the operation of the solenoids the glass in themold is severed from the gathering-rod and the plunger raised and thecircuit through the table-shifting solenoid 19 closed by the armshifting the switch 59. As soon as the switch 59 is closed and the table2 moved sufficiently far to permit of the opening of the switch 48 inthe circuit of the pressing-solenoid the operator releases the treadle,permitting it to be shifted by its spring to open the circuit throughshear operating and lifting solenoids and to close the switch 51. 'Bythe operation of the solenoid 19 the table is shifted sulficiently farto bring the mold into which the mass of glass has been placed intoposition under the plunger and the mold-with the completed article overthe discharging-solenoid 42. As the table reaches this position theprojections a thereon close the switches 48 and 61 in circuits throughthe pressing-solenoid 32 and the discharging-solenoid 42. In thedownward movement of the plunger the arm 70 leaves the switch 59,permitting it to open, and closes the switch 68 in thecircuit of thesolenoid 6b, which controls the rheostat. By the adjustment of therheostat the operative eifect of the pressing-solenoid is reduced. Inorder to make the reduction of the current through the solenoid gradual,a spring 79 is arranged between the end of the solenoid and a shoulderon its core. This spring will retard the movement of the core and willalso effect its return to normal position.

While it is preferred that the several operations should be primarilycontrolled by the shear mechanism, as that is the initial step, and theother steps are dependent on its completion, it will be readilyunderstood that the several operations may be primarily controlled ordependent upon the completion of the movements of the mechanismsemployed for effecting any of the other steps.

I claim herein as my invention 1. In a machine for pressing glass, thecombination of a series of movable molds, a pressing mechanism, ashearing mechanism and mechanism for shifting the molds into operativerelation to said shearing and pressing mechanisms, two of saidmechanisms being automatically controlled by and dependent upon theoperation of the other mechanism, substantially as set forth.

2. In a machine for pressing glass, the combination of a table, a seriesof molds arranged on the table, means for shifting the table, a singleplunger and a mechanism for operating the plunger controlled by thetable, substantially as set forth.

3. In a machine for pressing glass, the combination of a table, moldsarranged on the table, a shearing mechanism, and means con-' trolled bythe shearing mechanism for shifting the table, substantially as setforth.

4. In a machine for pressing glass, the combination of a table, moldsarranged on the table, means for shifting the table, a shearingmechanism, and a pressing mechanism controlled by the shearingmechanism, substantially as set forth.

5. In a machine for pressing glass, the combination of a plunger, apower mechanism having a variable length of stroke connected directly tothe plunger, and means controlled by the movement of the plunger forvarying the effective action of the power mechanism employed foractuating the plunger, substantially as set forth.

In testimony whereof I have hereunto set my hand.

THOMAS COLEMAN, JR.

Witnesses:

DARWIN S. WOLOOTT, F. E. GAITHER.

